Added IPC call to inform launcher of item was dragged over drop zone

Updated IBubblesListener.aidl interface to pass value of drop zone
update.

Added @JVMStatic annotation for BubbleBarLocation.isDifferentSides
method

Test: three huger
Bug: 411505605
Flag: com.android.wm.shell.enable_create_any_bubble
Change-Id: I59f7fa583e6884ef4a5aa56534193a47fe9f0c9d